DISPLAY DEVICE
A display device includes a display module, a backplane assembly, a bracket assembly (3) and a system circuit assembly. The display module includes a display panel, and the display panel has a light exit surface and a back surface opposite to the light exit surface. The backplane assembly is disposed on a side of the display panel facing away from the light exit surface, and the backplane assembly is fixed to the display module. A surface of the backplane assembly away from the display module is fixed to the bracket assembly. The bracket assembly has a hollow region. The system circuit assembly is fixed in the hollow region of the bracket assembly, and the system circuit assembly is electrically connected to the display module. The system circuit assembly is configured to provide signals to the display module to make the display module.
This application is a national phase entry under 35 USC 371 of International Patent Application No. PCT/CN2020/133630, filed on Dec. 3, 2020, which claims priority to Chinese Patent Application No. 201922181463.3, filed on Dec. 5, 2019, which are incorporated herein by reference in their entirety.
TECHNICAL FIELDThe present disclosure relates to the field of display technologies, and in particular, to a display device.
BACKGROUNDAn organic electroluminescent diode (also called organic light-emitting diode, OLED) display is a flexible display device made of organic electroluminescent diodes, which has a good display effect and a wide operating temperature range, may realize self-luminescence, and thus has a good application prospect.
Compared to a liquid crystal display (LCD), the OLED display has good bending properties, so that the OLED display may be used for curved display.
SUMMARYIn an aspect, a display device is provided. The display device includes a display module, a backplane assembly, a bracket assembly, and a system circuit assembly. The display module includes a display panel, and the display panel has a light exit surface and a back surface opposite to the light exit surface. The backplane assembly is disposed on a side of the display panel facing away from the light exit surface, and the backplane assembly is fixed to the display module. A surface of the backplane assembly away from the display module is fixed to the bracket assembly. The bracket assembly has a hollow region. The system circuit assembly is fixed in the hollow region of the bracket assembly, and the system circuit assembly is electrically connected to the display module. The system circuit assembly is configured to provide signals to the display module to make the display module display.
In some embodiments, at least one side wall of the system circuit assembly has a plurality of external interfaces. A side wall of the system circuit assembly has a wire passing port, and internal signal lines connected to the display module pass through the wire passing port to be electrically connected to the system circuit assembly. The backplane assembly has an opening configured to allow the internal signal lines to pass through to be electrically connected to the display module.
In some embodiments, the system circuit assembly includes a carrying box, a box cover, and a system circuit board. The carrying box includes a carrying box body and a plurality of fixing portions disposed on at least two opposite side edges of the carrying box body. The plurality of fixing portions extend outside the carrying box body, and the plurality of fixing portions are configured to be connected to the bracket assembly. The box cover is fixed to the carrying box to form a receiving chamber. The system circuit board is disposed in the receiving chamber.
In some embodiments, a plurality of heat dissipation holes are disposed in the box cover.
In some embodiments, the carrying box body includes a bottom plate, a first side wall and a second side wall. The bottom plate includes a first edge and a second edge that are oppositely arranged, and a third edge and a fourth edge that are oppositely arranged. The first side wall and the second side wall are disposed at the first edge and the second edge, respectively, and the first side wall and the second side wall are connected to the bottom plate as a whole. At least one of the plurality of fixing portions is connected to the third edge as a whole, and remaining fixing portion(s) of the plurality of fixing portions are connected to the fourth edge as a whole. The carrying box further includes a third side wall and a fourth side wall. The third side wall and the fourth side wall are disposed at the third edge and the fourth edge, respectively. The third side wall located at the third edge is fixed to the first side wall and the second side wall, and/or the bottom plate. The fourth side wall located at the fourth edge is fixed to the first side wall and the second side wall, and/or the bottom plate. The plurality of external interfaces are disposed in the fourth side wall.
In some embodiments, the carrying box further includes a plurality of connection fixing members disposed on the first side wall and the second side wall. The plurality of connection fixing members are configured to make the box cover be fixed to the first side wall and the second side wall.
In some embodiments, the bracket assembly includes a support portion, two edge-covering brackets, and at least two detachable fixing structures. The support portion extends in a first direction. The two edge-covering brackets are disposed on two sides of the support portion in the first direction, respectively. Each edge-covering bracket extends in a second direction, and an end of the edge-covering bracket away from the support portion is a flanging portion. The first direction is an extending direction of a side of the light exit surface, the second direction is an extending direction of another side of the light exit surface, and the side and the another side are two adjacent sides of the light exit surface. The edge-covering bracket is fixed to a corresponding end of the support portion through at least one detachable fixing structure. One of the edge-covering bracket and an end of the support portion has at least one through hole, and each detachable fixing structure passes through a through hole to be fixed to another one. An outer wall of the detachable fixing structure and a hole wall of the through hole have a gap therebetween, so as to enable the edge-covering bracket and the support portion to be relatively moved when the support portion is assembled with the edge-covering bracket. The surface of the backplane assembly away from the display module is in contact with and fixed to the support portion, and the two edge-covering brackets are located at two side edges of the display module in the first direction.
In some embodiments, the edge-covering bracket further includes a connection portion, and the connection portion and the flanging portion form an L-shaped structure. The connection portion includes a first connection sub-portion and a second connection sub-portion, and the first connection sub-portion is located between the second connection sub-portion and the flanging portion, and is connected to the second connection sub-portion and the flanging portion. The second connection sub-portion and the end of the support portion are stacked in a thickness direction of the bracket assembly, and the first connection sub-portion is non-overlapped with the support portion in the thickness direction of the bracket assembly. The at least one through hole is disposed in the second connection sub-portion.
In some embodiments, the support portion includes at least two support members, and any two adjacent support members of the at least two support members are arranged at an interval in the second direction, and an end of each support member is fixed to the edge-covering bracket through at least one detachable fixing structure. The bracket assembly further includes at least one bracket disposed between the two edge-covering brackets, and each bracket extends in the second direction. The at least one bracket is fixedly connected to the at least two support members. The system circuit assembly is disposed in the hollow region enclosed by two adjacent support members and the at least one bracket.
In some embodiments, the support member is in an arcuate shape, and a surface of the support member that is in contact with the surface of the backplane assembly away from the display module is an arc-shaped surface. An extending direction of a curved side of the arc-shaped surface is parallel to the first direction. The arc-shaped surface and the flanging portion are located on a same side of the bracket assembly.
In some embodiments, a side of at least one support member away from the backplane assembly is provided with a groove, and the groove penetrates through the support member in the second direction. And/or, the support member is further provided with at least one heat dissipation window, and the at least one heat dissipation window penetrates through the support member in the second direction.
In some embodiments, a plurality of mounting holes are disposed in a surface of the bracket assembly facing the backplane assembly. A plurality of protrusions are disposed on a surface of the backplane assembly facing the bracket assembly, and the plurality of protrusions are configured to be matched with the plurality of mounting holes.
In some embodiments, the display module further includes two protection bezels, and the two protection bezels are disposed on two side edges of the display panel that are oppositely arranged in a second direction. Each protection bezel is fixed to one of two side faces of the display panel that are oppositely arranged in the second direction.
In some embodiments, the protection bezel includes a side bezel, a clamping portion connected to the side bezel, and a position-limiting platform disposed on a side of the clamping portion away from the display panel. The clamping portion is disposed between the backplane assembly and the display panel. The side bezel is fixed to the side face of the display panel. An edge portion of the backplane assembly is disposed on a surface of the clamping portion away from the display panel.
In some embodiments, the display module further includes at least one first driving circuit board disposed on at least one of two side edges of the display panel that are oppositely arranged in the second direction. Each first driving circuit board is located on the back surface of the display panel, and extends beyond an edge of the display panel. The first driving circuit board is located between the side bezel, the clamping portion and the display panel.
In some embodiments, the display module further includes at least one second driving circuit board disposed on at least one of two side edges of the display panel that are oppositely arranged in a first direction, and each second driving circuit board is located on the back surface of the display panel. An orthogonal projection of the second driving circuit board on the backplane assembly is located in a range of an orthogonal projection of the display panel on the backplane assembly.
In some embodiments, the backplane assembly includes a backplane and at least one connection structure disposed on a side surface of the backplane proximate to the display panel. The display panel is fixed to the backplane through the at least one connection structure.
In some embodiments, the display module further includes a control circuit board disposed on the back surface of the display panel. The display device has a central region and an edge region around the central region. The at least one connection structure is disposed in the central region, and the control circuit board is disposed in the edge region.
In some embodiments, the backplane assembly further includes an insulating sheet disposed on the side surface of the backplane proximate to the display panel. An orthogonal projection of the insulating sheet on the display module covers the control circuit board.
In some embodiments, the at least one connection structure includes a plurality of connection structures, and the plurality of connection structures are arranged in an array.
In order to describe technical solutions in the present disclosure more clearly, the accompanying drawings to be used in some embodiments of the present disclosure will be introduced briefly below. Obviously, the accompanying drawings to be described below are merely accompanying drawings of some embodiments of the present disclosure, and a person of ordinary skill in the art may obtain other drawings according to these drawings. In addition, the accompanying drawings to be described below may be regarded as schematic diagrams, but are not limitations on an actual size of a product, an actual process of a method, and an actual timing of a signal involved in the embodiments of the present disclosure.
Technical solutions in some embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are merely some but not all embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art on a basis of the embodiments of the present disclosure shall be included in the protection scope of the present disclosure.
Unless the context requires otherwise, throughout the description and the claims, the term “comprise” and other forms thereof such as the third-person singular form “comprises” and the present participle form “comprising” are construed as an open and inclusive meaning, i.e., “including, but not limited to”. In the description of the specification, the terms such as “one embodiment”, “some embodiments”, “exemplary embodiments”, “an example”, “specific example” or “some examples” are intended to indicate that specific features, structures, materials or characteristics related to the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment(s) or example(s). In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any suitable manner.
Hereinafter, the terms “first” and “second” are only used for descriptive purposes, and are not to be construed as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined with “first” or “second” may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the term “a plurality of/the plurality of” means two or more unless otherwise specified.
In the description of some embodiments, the term “connected” and its extensions may be used. For example, the term “connected” may be used in the description of some embodiments to indicate that two or more components are in direct physical or electrical contact with each other. However, the term “connected” may also mean that two or more components are not in direct contact with each other, but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.
The phrase “at least one of A, B and C” has the same meaning as the phrase “at least one of A, B or C”, both including the following combinations of A, B and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B and C.
The phrase “A and/or B” includes the following three combinations: only A, only B, and a combination of A and B.
The use of the phrase “applicable to” or “configured to” indicates an open and inclusive meaning, which does not exclude devices that are applicable to or configured to perform additional tasks or steps.
In addition, the use of the phrase “based on” means openness and inclusiveness, in that a process, step, calculation or other action “based on” one or more of the stated conditions or values may, in practice, be based on additional conditions or values exceeding those stated.
The term “about” or “approximately” as used herein includes a stated value and an average value within an acceptable range of deviation of a particular value determined by a person of ordinary skill in the art, considering measurement in question and errors associated with measurement of a particular quantity (i.e., limitations of a measurement system).
Exemplary embodiments are described herein with reference to sectional views and/or plan views as idealized exemplary drawings. In the accompanying drawings, thicknesses of layers and regions are enlarged for clarity. Therefore, the exemplary embodiments should not be construed to be limited to the shapes of the layers and the regions shown herein, but to include the deviations due to, for example, manufacturing. In addition, the layers and the regions shown in the accompanying drawings are schematic in nature, and their shapes are not intended to show actual shapes of the regions in a device, and are not intended to limit the scope of the exemplary embodiments.
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The display device 100 may be used as a product or a component with any display function, such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a digital photo frame, a navigator, or a vehicle-mounted computer. The application of the display device is not particularly limited in the embodiments of the present disclosure.
In some embodiments, the display panel 11 is a flexible display panel. In some examples, the display panel 11 is a flexible self-luminous display panel. For example, the display panel 11 is an organic electroluminescent diode (also called organic light-emitting diode, OLED) display panel. Of course, the display panel 11 may also be another type of display panel. The display panel 11 in the embodiments of the present disclosure is not limited to be the flexible display panel.
It will be noted that the display device 100 in the embodiments of the present disclosure may be a flat display device or a curved display device. In a case where the display device 100 is the curved display device, the display panel 11 is the flexible display panel.
In some embodiments, as shown in
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An outer wall of the detachable fixing structure 33 and a hole wall of the through hole K have a gap therebetween, so as to enable the edge-covering bracket 32 and the support portion 31 to be relatively moved when the support portion 31 is assembled with the edge-covering bracket 32, thereby adjusting a relative position between the edge-covering bracket 32 and the support portion 31. In some embodiments, the edge-covering bracket 32 is moved relative to the support portion 31 in the first direction X when the support portion 31 is assembled with the edge-covering bracket 32, and after the adjustment of the relative position between the edge-covering bracket 32 and the support portion 31 is finished, the edge-covering bracket 32 and the support portion 31 are completely locked by the detachable fixing structure(s) 33, so that the relative movement between the edge-covering bracket 32 and the support portion 31 does not occur any more.
It will be noted that a maximum distance of the relative movement between the edge-covering bracket 32 and the support portion 31 may be set according to actual needs. Based on this, a size of the through hole K and a size of the detachable fixing structure 33 are reasonably set according to a set maximum distance.
When the bracket assembly 3 is used for being assembled with the backplane assembly 2 and the display module 1, the backplane assembly 2 and the display module 1 are arranged on a side of the support portion 31 in a thickness direction of the bracket assembly 3. The flanging portions 321 of the two edge-covering brackets 32 are located at two sides of the display module 1 in the first direction X, and accordingly, the flanging portions 321 of the two edge-covering brackets 32 are located at two sides of the backplane assembly 2 in the first direction X. Each flanging portion 321 is opposed to one of two opposite side faces of the display module 1 in the first direction X, so as to protect the side face. In some examples, a distance between the flanging portion 321 and the side face of the display module 1 is less than or equal to a preset width. The preset width may be set according to actual conditions. For example, the preset width is less than or equal to 1 mm. Since the relative position of the edge-covering bracket 32 and the support portion 31 is adjustable, a distance between the flanging portions 321 of the two edge-covering brackets 32 is adjustable. Thus, the distance between the flanging portion 321 and the side face of the display module 1 is adjustable, so that the distance may be adjusted to be within a required range. By providing the detachable fixing structures 33 in the bracket assembly 3, when the bracket assembly 3 is assembled with the backplane assembly 2 and the display module 1, the relative position between the edge-covering bracket 32 and the support portion 31 in the first direction X may be adjusted at any time through the operation of the detachable fixing structure(s) 33.
For the curved display device, both the display panel 11 and the backplane assembly 2 are curved. As shown in
For example, as shown in
Although the deviation may be controlled when the display panel 11 and the backplane assembly 2 are manufactured, and a misalignment degree may be reduced to some extent, the misalignment of the display panel 11 and the backplane assembly 2 after bending is still inevitable, in that a curvature radius of the curved display device during actual bending and a curvature radius during design cannot be completely matched. Moreover, a degree of the deviation itself is also poor in consistency, and different deviations may be presented on different curved display devices.
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In some other examples, the through hole K is a waist-shaped hole, and a length of the through hole K in the first direction X is greater than a width of the through hole K in the second direction Y.
For example, the threaded fastener is a bolt. The bolt includes a threaded rod and a nut. The threaded rod of the bolt extends into the first threaded hole 311B after passing through the through hole K. A depth of the threaded rod into the support portion 31 gradually increases by rotating the threaded rod. When a surface of the nut facing the threaded rod is pressed against the second connection sub-portion 3222 and a surface of the second connection sub-portion 3222 facing the support portion 31 is also pressed against the support portion 31, the edge-covering bracket 32 is fixedly connected to the support portion 31.
For another example, the threaded fastener is a double-end stud. The detachable fixing structure 33 further includes a nut, and the nut is sleeved on one end of the double-end stud. Another end of the double-end stud extends into the first threaded hole 311B after passing through the through hole K. A depth of the double-end stud into the support portion 31 gradually increases by rotating a threaded rod. When a surface of the nut facing the support portion 31 is pressed against the second connection sub-portion 3222 and the surface of the second connection sub-portion 3222 facing the support portion 31 is also pressed against the support portion 31, the edge-covering bracket 32 is fixedly connected to the support portion 31.
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In some examples, the at least one bracket 34 includes two brackets 34, and the two brackets 34 are arranged at an interval in the first direction X. The system circuit assembly 4 is arranged in the hollow region 3A enclosed by two adjacent support members 311 and the two brackets 34.
In some examples, a distance between one of the two brackets 34 and a corresponding edge-covering bracket 32 is equal to a distance between another bracket 34 and another corresponding edge-covering bracket 32.
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In some embodiments, the support portion 31, the bracket 34, and the edge-covering bracket 32 are sheet metals, or are injection molded.
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For example, the protection bezel 12 is fixed to the display panel 11 by adhesion.
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An edge portion of the backplane assembly 2 is provided on a surface of the clamping portion 122 away from the display panel 11, and a gap dy is provided between a side face of the backplane assembly 2 located at the edge portion and a side wall of the position-limiting platform 123. In this way, it is possible to avoid an extrusion between the protection bezel 12 and the backplane assembly 2 and a displacement of the protection bezel 12 caused by the extrusion, thereby ensuring that the protection bezel 12 and the side face of the display panel 11 are able to be in a reliable contact.
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For example, the first driving circuit board 13 includes a first film 131 and a source driving integrated circuit (IC) 132 disposed on the first film 131, and the source driving IC 132 is located on a side of the first film 131 away from the display panel 11. When the first driving circuit board 13 is fixed, an end of the first film 131 is fixed to the back surface 112 of the display panel 11, and the remaining portion protudes outside the display panel 11, and then is folded back to the back surface 112 side of the display panel 11.
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In some examples, the central region 101 is a display region of the display device 100, and the edge region 102 is a peripheral region of the display device 100. In some other examples, an area of the central region 101 is slightly less than that of the display region of the display device 100, and the edge region 102 is other region of the display device 100. In some other examples, the area of the central region 101 is slightly greater than that of the display region of the display device 100, and the edge region 102 is other region of the display device 100.
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The control circuit board 19 is connected to the first driving circuit board(s) 13 and the second driving circuit board(s) 14. In some examples, the control circuit board 19 is a printed circuit board assembly (PCBA). For example, the PCBA includes a printed circuit board (PCB), and a timing controller (TCON), a power management IC (PMIC) and other ICs or circuits that are disposed on the PCB.
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In some examples, the first connection structure 231 is a magnetic attraction structure, and the first connection structure 231 is configured to fix the display module 1 and the backplane 21 by attraction. In some other examples, the first connection structure 231 is an adhesive structure, and the first connection structure 231 is configured to fix the display module 1 and the backplane 21 by adhesion.
In a case where the first connection structure 231 is the magnetic attraction structure, for example, the first connection structure 231 is a soft magnetic sheet. The soft magnetic sheet is a plate-like structure made of a material with weak magnetism, which is able to generate a slight magnetic attraction force and play a role of auxiliary fixation. For example, a material of the soft magnetic sheet includes a flexible material such as rubber. The flexible material is soft in property, and has a good buffer effect. Therefore, the first connection structure 231 made of the flexible material may prevent an impact on the display panel 11. In an assembling process of the display module 1 and the backplane assembly 2, the first connection structure 231 made of the flexible material also has advantages of being easily bent and being attached to the display panel 11.
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In a case where the first connection structure 231 is the magnetic attraction structure and the second connection structure 232 is the adhesive structure, when the display module 1 is assembled with the backplane assembly 2, the display module 1 is first fixed to the backplane 21 by attraction through the first connection structure(s) 231 to realize alignment pre-assembly. Since the display module 1 is fixed to the backplane 21 by attraction through the magnetic attraction structure(s), a relative position of the display module 1 and the backplane 21 may be easily adjusted during the alignment pre-assembly, which reduces an assembly difficulty and improves an assembly accuracy. After the display module 1 and the backplane 21 are accurately positioned, the display panel 11 and the backplane 21 are further fixed by the plurality of second connection structures 232.
In this way, on one hand, it is possible to ensure that the display module 1 and the backplane 21 are firmly fixed together. On another hand, compared to that the display module 1 is fixed to the backplane 21 through an entire adhesive layer, which may result in an excessive stress of the display panel 11 and break the display panel 11, this problem may be avoided through cooperation of the magnetic attraction structure and the adhesive structure in the embodiments of the present disclosure. On yet another hand, since a magnetic attraction force generated by the magnetic attraction structure between the display panel 11 and the backplane 21 is mainly distributed in a normal direction (i.e., the thickness direction of the display device 100), and the magnetic attraction force is weak in a tangential direction (i.e., a direction perpendicular to the thickness direction of the display device 100), in a transportation process of the display device 100, vibration acting on the display panel 11 and the backplane 21 may be absorbed through slight deformations, in the tangential direction, of the display panel 11 and the backplane 21 in a region where the magnetic attraction structure(s) are located, thereby preventing the display panel 11 from being damaged.
In some examples, the backplane 21 is a metal backplane. In some examples, a material of the backplane 21 includes one of iron (Fe), cobalt (Co), nickel (Ni) and alloys thereof, rare earth and alloys thereof, or a compound of manganese (Mn).
In a case where the first connection structure 231 is the magnetic attraction structure and the second connection structure 232 is the magnetic attraction structure, in some examples, a magnetic attraction force of the first connection structure 231 is less than a magnetic attraction force of the second connection structure 232. In this way, it is possible to reduce a stress of the panel central region 11A in a case of ensuring that the display module 1 and the backplane 21 are accurately aligned and firmly fixed. Especially in the assembly process of the curved display device, a large magnetic attraction force is applied to the panel edge region 11B to make the display panel 11 reach a predetermined overall curvature. A small magnetic attraction force is applied to the panel central region 11A to make the display panel 11 be well attached to the backplane 21 in the panel central region 11A, so as to reach a predetermined local curvature and a smooth bending transition. Thus, the display panel 11 is capable of being well bent to be attached to the curved backplane, and the stress concentration and excessive bending of the panel central region 11A are avoided to ensure that the display panel 11 is not damaged in the assembly process.
In the case where the second connection structure 232 is the magnetic attraction structure, in some examples, a material of the second connection structure 232 includes metal. For example, the material of the second connection structure 232 includes one of iron (Fe), cobalt (Co), nickel (Ni) and alloys thereof, rare earth and alloys thereof, or a compound of manganese (Mn). For example, the second connection structure 232 is a neodymium iron boron magnet.
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For example, the at least one first connection structure 231 includes the plurality of first connection structures 231, and the first adhesive layer 24 includes a plurality of first adhesive blocks, and a surface of each first adhesive block is adhered to the backplane 21, and another surface of each first adhesive block is adhered to a corresponding first connection structure 231. For example, the first adhesive layer 24 may be a double-sided tape. For another example, the first adhesive layer 24 further includes a plurality of second adhesive blocks, and a surface of each second adhesive block is adhered to the backplane 21, and another surface of each second adhesive block is adhered to a corresponding second connection structure 232.
In order to ensure that the first connection structure 31 is firmly adhered to the backplane 21, an adhesive force between the first adhesive layer 24 and the backplane 21 may be greater than a magnetic attraction force between the first connection structure 231 and the display panel 11. In this way, it is possible to prevent the first connection structure 231 and the backplane 21 from being separated due to the magnetic attraction force. Similarly, the adhesive force between the first adhesive layer 24 and the backplane 21 may be greater than a magnetic attraction force between the second connection structure 232 and the display panel 11.
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The plurality of second connection structures 232 may be divided into a first group of connection structures and a second group of connection structures. The first group of connection structures includes a part of the plurality of second connection structures 232, and the second group of connection structures includes the remaining part of the plurality of second connection structures 232. A plurality of second connection structures 232 are both included in the first group of connection structures and the second group of connection structures. In some examples, the first group of connection structures are provided in the two first backplane edge sub-regions 21B1. That is, some second connection structures 232 in the first group of connection structures are provided in one first backplane edge sub-region 21B1, and the remaining second connection structure(s) 232 are provided in another first backplane edge sub-region 21B1. The second group of connection structures are provided in the two second edge sub-regions 21B2. That is, some second connection structures 232 in the second group of connection structures are provided in one second backplane edge sub-region 21B2, and the remaining second connection structure(s) 232 are provided in another second backplane edge sub-region 21B2.
Based on this, the magnetic attraction forces generated by the plurality of second connection structures 232 in the two first edge sub-regions AA and the two second edge sub-regions BB are uniformly distributed, so that the display panel 11 and the backplane 21 are able to be well fixed by attraction in the entire edge region 102, so as to avoid local loosening or warping.
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Corresponding to the two first edge sub-regions AA and the two second edge sub-regions BB, as shown in
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An adhesive force generated by the second adhesive layer 16 between the auxiliary magnetic attraction member 15 and the display panel 11 is greater than a magnetic attraction force between the auxiliary magnetic attraction member 15 and the second connection structure 232, so as to prevent the auxiliary magnetic attraction member 15 and the display panel 11 from being separated due to the magnetic attraction force, and to ensure a reliability of the connection between the display panel 11 and the auxiliary magnetic attraction member 15. In some examples, the second adhesive layer 16 may be a double-sided tape.
In some examples, the auxiliary magnetic attraction member 15 is a metal sheet. For example, a thickness of the metal sheet is approximately in a range from 0.25 mm to 0.35 mm. For example, the thickness of the metal sheet is 0.25 mm, 0.28 mm, 0.3 mm, 0.32 mm, or 0.35 mm. A thickness direction of the metal sheet is parallel to the thickness direction of the display device 100.
Considering that a thickness of a metal layer in the display panel 11 is usually less than 0.1 mm, and a magnetic attraction force between the metal layer and the second connection structure 232 is small, and thus, by providing the auxiliary magnetic attraction member 15, the second connection structure 232 of the second group of connection structures may be strong in magnetic attraction force with the auxiliary magnetic attraction member 15 and the metal layer in the display panel 11, thereby increasing the attraction force between the display panel 11 and the backplane 21, so that the fixation between the display panel 11 and the backplane 21 is reliable. In addition, by properly setting a thickness of the auxiliary magnetic attraction member 15, an influence on the thickness of the display device 100 may be ignored, and the bending of the display panel 11 is not affected for the curved display device.
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Here, the adhesive structures 23B are not in direct contact with the display panel 11. On one hand, it is possible to avoid the damage to the structure of the display panel 11. On another hand, when the display panel 11 and the backplane 21 are required to be separated, the adhesive structures 23B may be directly cut without damaging the display panel 11, so that the disassembly is safe and convenient.
In some examples, a material of the adhesive structure 23B includes a neutral transparent glass glue. Since the neutral transparent glass glue is in a semi-liquid and semi-solid state after being applied to the edge of the dispensing through hole 212, and it is required to take a period of time to solidify, coating the neutral transparent glass glue has a certain fault tolerance, and a coating position may be adjusted before the glass glue is solidified. After the neutral transparent glass glue is solidified into the adhesive structure 23B, the adhesive structure 23B has a strong viscosity and a certain elasticity, which facilitates the fixation between the display panel 11 and the backplane 21. In addition, when the display panel 11 is required to be removed from the backplane 21, the adhesive structures 23B may be heated to be softened, and then the adhesive structures 23B are peeled off with a tool such as a blade, so as to facilitate the removal of the display panel 11 from the backplane 21, thereby improving the convenience of the disassembly, assembly, and maintenance of the display panel 11.
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In some examples, as shown in
An adhesive force generated by the third adhesive layer 18 between the auxiliary connection structure 17 and the display panel 11 is greater than a magnetic attraction force between the auxiliary connection structure 17 and the second connection structure 232, so as to prevent the auxiliary connection structure 17 and the display panel 11 from being separated due to the magnetic attraction force, and to ensure a reliability of the connection between the display panel 11 and the auxiliary connection structure 17. In some examples, the third adhesive layer 18 is a double-sided tape.
In some examples, the auxiliary connection structure 17 is a metal sheet. For example, a thickness of the metal sheet is approximately in a range from 0.25 mm to 0.35 mm, such as 0.25 mm, 0.28 mm, 0.3 mm, 0.32 mm, or 0.35 mm. A thickness direction of the metal sheet is parallel to the thickness direction of the display device 100.
Considering that the thickness of the metal layer in the display panel 11 is usually less than 0.1 mm, and the magnetic attraction force between the metal layer and the second connection structures 232 is small, and thus, by providing the auxiliary connection structure 17, the second connection structure 232 of the first group of connection structures may be strong in magnetic attraction force with the auxiliary connection structure 17 and the metal layer in the display panel 11, thereby increasing the attraction force between the display panel 11 and the backplane 21, so that the fixation between the display panel 11 and the backplane 21 is reliable. In addition, by properly setting a thickness of the auxiliary connection structure 17, an influence on the thickness of the display device 100 may be ignored, and the bending of the display panel 11 is not affected for the curved display device.
In some embodiments, as shown in
In some examples, as shown in
In some examples, as shown in
In some embodiments, as shown in
The box cover 42 is fixed to the carrying box 41 to form a receiving chamber, and the system circuit board 43 is provided in the receiving chamber. In some examples, a plurality of heat dissipation holes 421 are provided on the box cover 42 to dissipate heat generated by the system circuit board 43, so as to reduce heat accumulation and temperature rise caused by the heat accumulation. In some examples, the carrying box 41 may be a split structure or an integrated structure.
In some examples, as shown in
In some examples, as shown in
In some examples, as shown in
An assembling process of the display device 100 in the embodiments of the present disclosure will be described briefly below. The following description is only for explanation, and is not for limitation. First, the backplane assembly 2 is aligned with the bracket assembly 3, and the two are connected and fixed after being accurately positioned. Then, the display module 1 is fixed to a surface of the backplane assembly 2 away from the bracket assembly 3. Finally, the system circuit assembly 4 is fixed in the bracket assembly 3, and then the display module 1 is wired to the system circuit assembly 4 to complete the assembly of the display device 100.
The foregoing descriptions are merely specific implementations of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Changes or replacements that any person skilled in the art could conceive of within the technical scope of the present disclosure shall be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims
1. A display device, comprising:
- a display module including a display panel, the display panel having a light exit surface and a back surface opposite to the light exit surface;
- a backplane assembly disposed on a side of the display panel facing away from the light exit surface, the backplane assembly being fixed to the display module;
- a bracket assembly, a surface of the backplane assembly away from the display module being fixed to the bracket assembly, and the bracket assembly having a hollow region; and
- a system circuit assembly fixed in the hollow region of the bracket assembly, the system circuit assembly being electrically connected to the display module, and the system circuit assembly being configured to provide signals to the display module to make the display module display.
2. The display device according to claim 1, wherein at least one side wall of the system circuit assembly has a plurality of external interfaces;
- a side wall of the system circuit assembly has a wire passing port, and internal signal lines connected to the display module pass through the wire passing port to be electrically connected to the system circuit assembly; and the backplane assembly has an opening configured to allow the internal signal lines to pass through to be electrically connected to the display module.
3. The display device according to claim 2, wherein the system circuit assembly includes a carrying box, a box cover, and a system circuit board;
- the carrying box includes a carrying box body and a plurality of fixing portions disposed on at least two opposite side edges of the carrying box body; the plurality of fixing portions extend outside the carrying box body, and the plurality of fixing portions are configured to be connected to the bracket assembly;
- the box cover is fixed to the carrying box to form a receiving chamber; and
- the system circuit board is disposed in the receiving chamber.
4. The display device according to claim 3, wherein a plurality of heat dissipation holes are disposed in the box cover.
5. The display device according to claim 3, wherein the carrying box body includes a bottom plate, a first side wall and a second side wall; the bottom plate includes a first edge and a second edge that are oppositely arranged, and a third edge and a fourth edge that are oppositely arranged; the first side wall and the second side wall are disposed at the first edge and the second edge, respectively, and the first side wall and the second side wall are connected to the bottom plate as a whole; at least one of the plurality of fixing portions is connected to the third edge as a whole, and a remaining fixing portion of the plurality of fixing portions is connected to the fourth edge as a whole;
- the carrying box further includes a third side wall and a fourth side wall; the third side wall and the fourth side wall are disposed at the third edge and the fourth edge, respectively; the third side wall located at the third edge is fixed to the first side wall and the second side wall, and/or the bottom plate; the fourth side wall located at the fourth edge is fixed to the first side wall and the second side wall, and/or the bottom plate; and
- the plurality of external interfaces are disposed in the fourth side wall.
6. The display device according to claim 5, wherein the carrying box further includes a plurality of connection fixing members disposed on the first side wall and the second side wall, and the plurality of connection fixing members are configured to make the box cover be fixed to the first side wall and the second side wall.
7. The display device according to claim 1, wherein the bracket assembly includes a support portion, two edge-covering brackets, and at least two detachable fixing structures;
- the support portion extends in a first direction;
- the two edge-covering brackets are disposed on two sides of the support portion in the first direction, respectively; each edge-covering bracket extends in a second direction, and an end of the edge-covering bracket away from the support portion is a flanging portion; the first direction is an extending direction of a side of the light exit surface, the second direction is an extending direction of another side of the light exit surface, and the side and the another side are two adjacent sides of the light exit surface;
- the edge-covering bracket is fixed to a corresponding end of the support portion through at least one detachable fixing structure; one of the edge-covering bracket and an end of the support portion has at least one through hole, and each detachable fixing structure passes through a through hole to be fixed to another one; an outer wall of the detachable fixing structure and a hole wall of the through hole have a gap therebetween, so as to enable the edge-covering bracket and the support portion to be relatively moved when the support portion is assembled with the edge-covering bracket; and
- the surface of the backplane assembly away from the display module is in contact with and fixed to the support portion, and the two edge-covering brackets are located at two side edges of the display module in the first direction.
8. The display device according to claim 7, wherein the edge-covering bracket further includes a connection portion, and the connection portion and the flanging portion form an L-shaped structure;
- the connection portion includes a first connection sub-portion and a second connection sub-portion, and the first connection sub-portion is located between the second connection sub-portion and the flanging portion, and is connected to the second connection sub-portion and the flanging portion; and
- the second connection sub-portion and the end of the support portion are stacked in a thickness direction of the bracket assembly, and the first connection sub-portion is non-overlapped with the support portion in the thickness direction of the bracket assembly; and the at least one through hole is disposed in the second connection sub-portion.
9. The display device according to claim 7, wherein the support portion includes at least two support members, and any two adjacent support members of the at least two support members are arranged at an interval in the second direction, and an end of each support member is fixed to the edge-covering bracket through at least one detachable fixing structure;
- the bracket assembly further includes at least one bracket disposed between the two edge-covering brackets, and each bracket extends in the second direction; the at least one bracket is fixedly connected to the at least two support members; and
- the system circuit assembly is disposed in the hollow region enclosed by two adjacent support members and the at least one bracket.
10. The display device according to claim 9, wherein the support member is in an arcuate shape, and a surface of the support member that is in contact with the surface of the backplane assembly away from the display module is an arc-shaped surface; an extending direction of a curved side of the arc-shaped surface is parallel to the first direction; and the arc-shaped surface and the flanging portion are located on a same side of the bracket assembly.
11. The display device according to claim 9, wherein a side of at least one support member away from the backplane assembly is provided with a groove, and the groove penetrates through the support member in the second direction; and/or,
- the support member is further provided with at least one heat dissipation window, and the at least one heat dissipation window penetrates through the support member in the second direction.
12. The display device according to claim 1, wherein a plurality of mounting holes are disposed in a surface of the bracket assembly facing the backplane assembly; and
- a plurality of protrusions are disposed on a surface of the backplane assembly facing the bracket assembly, and the plurality of protrusions are configured to be matched with the plurality of mounting holes.
13. The display device according to claim 7, wherein the display module further includes two protection bezels, and the two protection bezels are disposed on two side edges of the display panel that are oppositely arranged in the second direction; and
- each protection bezel is fixed to one of two side faces of the display panel that are oppositely arranged in the second direction.
14. The display device according to claim 13, wherein the protection bezel includes a side bezel, a clamping portion connected to the side bezel, and a position-limiting platform disposed on a side of the clamping portion away from the display panel; and
- the clamping portion is disposed between the backplane assembly and the display panel; the side bezel is fixed to the side face of the display panel; and an edge portion of the backplane assembly is disposed on a surface of the clamping portion away from the display panel.
15. The display device according to claim 14, wherein the display module further includes at least one first driving circuit board disposed on at least one of two side edges of the display panel that are oppositely arranged in the second direction; each first driving circuit board is located on the back surface of the display panel, and extends beyond an edge of the display panel; and the first driving circuit board is located between the side bezel, the clamping portion and the display panel.
16. The display device according to claim 7, wherein the display module further includes at least one second driving circuit board disposed on at least one of two side edges of the display panel that are oppositely arranged in the first direction, and each second driving circuit board is located on the back surface of the display panel; and an orthogonal projection of the second driving circuit board on the backplane assembly is located in a range of an orthogonal projection of the display panel on the backplane assembly.
17. The display device according to claim 1, wherein the backplane assembly includes a backplane and at least one connection structure disposed on a side surface of the backplane proximate to the display panel; and
- the display panel is fixed to the backplane through the at least one connection structure.
18. The display device according to claim 17, wherein the display module further includes a control circuit board disposed on the back surface of the display panel; and
- the display device has a central region and an edge region around the central region, the at least one connection structure is disposed in the central region, and the control circuit board is disposed in the edge region.
19. The display device according to claim 18, wherein the backplane assembly further includes an insulating sheet disposed on the side surface of the backplane proximate to the display panel, and an orthogonal projection of the insulating sheet on the display module covers the control circuit board.
20. The display device according to claim 17, wherein the at least one connection structure includes a plurality of connection structures, and the plurality of connection structures are arranged in an array.
Type: Application
Filed: Dec 3, 2020
Publication Date: Jul 14, 2022
Inventor: Zifeng WANG (Beijing)
Application Number: 17/610,199